Northern Star Resources Ltd · ASX:NST
Northern Star Resources — Diggers & Dealers 2026
22 slides from Northern Star Resources's conference presentation, Aug 3, 2026
Slide 1: Diggers and Dealers August 2026
For personal use only Diggers and Dealers August 2026
Slide 2: Disclaimers
Disclaimers For personal use only ASX Listing Rule 5.19 and 5.23 Statement Disclaimer and Forward-Looking Statements This announcement contains current estimates of Northern Star Group and KCGM Operations’ Ore Northern Star Resources Ltd has prepared this announcement based on information available
Slide 3: Scale through simplicity
Scale through simplicity For personal use only Renewables energy location How KCGM is being built for its next era Fimiston III TSF Thermal power station Fimiston II (G) TSF 27Mtpa Processing hub 3
Slide 4: The global mining industry spent decades adding complexity
For personal use only Stage 2 Historic Plants Stage 1 The global mining industry spent decades adding complexity 4
Slide 5: A structural change to the cost base
A structural change to the cost base For personal use only Eliminated complexity Larger processing units Simplified operating model Lower-cost platform Redundant Repurposed Retained 5
Slide 6: Never just a bigger plant. A better operating model.
Never just a bigger plant. For personal use only A better operating model. One world-class processing hub. 6
Slide 7: Simplicity from advanced engineering
Simplicity from advanced engineering For personal use only Simpler design. Fewer interfaces. More reliable performance. Fewer pumps, transfer points and 1 Fewer unit operations redundant circuits Gravity flow, simplified flowsheet and 2 Larger equipment fewer interfaces Condition monitoring across c
Slide 8: Scale Through Simplicity
Scale Through Simplicity For personal use only Designed to simplify the operation and reduce costs Processing Operating Energy Efficiency Efficiency Efficiency Simple to operate More flexibility Lower use Simple to maintain More value Lower cost Structurally breaking the cost cycle 8
Slide 9: Processing Efficiency
Processing For personal use only Efficiency Simple to operate Simple to maintain • Fewer and larger units • Ease of maintenance • Systematic operation and tech-enabled Targeting significant reduction in processing cost per tonne at steady state (vs FY26)* * On a real-cost basis, excluding future inf
Slide 10: Operating Efficiency
Operating For personal use only Efficiency More flexibility More value • Integrating multiple ore sources • Handling material once • Enhancing equipment productivity Unlocking a simpler, more productive mining system 10
Slide 11: Energy Efficiency
Energy For personal use only Efficiency Lower use Lower cost • Introducing renewables • New thermal power station and distribution system • Utilising existing power station Improves operating economics with 256MW 110MW greater energy self-sufficiency Wind Farm Solar Farm and reduced emissions 120MW
Slide 12: Breaking the cost cycle
Breaking the cost cycle For personal use only Structural cost resets creating a sustainable cost advantage Structural cost advantage Northern Star Future cost path Mill Reduced exposure Processing Mine to future cost efficiency Operating Power inflation efficiency Energy efficiency Today Operational
Slide 13: Elevating KCGM to the next era
Elevating KCGM to the next era For personal use only 42Moz 15Moz 27Mtpa Mineral Resources Ore Reserves Processing Hub Long Mine Life Regional Growth Integrated Mining Open Pit Multi-decade production Multiple ore sources Underground Stockpiles A long-life, large-scale platform for long-term sharehol
Slide 14: Growing Underground
Growing Underground For personal use only A mature foundation. A growing future. 14
Slide 15: Regional growth opportunities
Regional growth opportunities For personal use only Kalgoorlie district 1,543km2 tenement package A district-scale mineral system supporting long-term growth around the expanded KCGM processing hub Near Mine: Extend existing operations Underground: Build future production Regional: Provide long-term
Slide 16: Extending mine life through Resource conversion
Extending mine life through Resource conversion For personal use only Converting discoveries into decades of production Future Exploration Mineral Resource Ore Reserve Conversion Mining Areas KCGM Growth Added 27Mtpa Plant Exploration & Growth KCGM Mineral Resources KCGM Ore Reserves 45 (Moz) 15 (Mo
Slide 17: Core processing facility
Core processing facility For personal use only Future-proofing Potential to automate manual processes, reducing costs Integration of advanced technologies, increasing efficiency Faster drill-assay-data turnaround KCGM drilling continues to increase with district expansion Future-proofed to accommoda
Slide 18: Laser-induced breakdown spectroscopy
Laser-induced breakdown spectroscopy For personal use only Fast and Accurate Mineralogy Advanced chemical analysis Partnered with detailed mineral libraries creates high-resolution mineral maps Delivers fast and accurate mineral quantification 20mm Supports rock-type determination and mineralisation
Slide 19: Expanding the economic inventory
Expanding the economic inventory For personal use only Lowering the economic cut-off unlocks district ounces Current Lens Lower Future Lens More costs economic ounces Lower cut-off Focus on highest-grade Modern Entire district evaluated More opportunities techniques through a new lens mine planning
Slide 20: Summary
For personal use only Summary • A 27Mtpa processing hub • Delivering scale, flexibility and lower costs • A district with multiple pathways • Every future discovery is worth more • Positioned to create long-term shareholder value We have built the platform. Now we unlock decades of value. 20
Slide 21: The start of KCGM's next era
For personal use only The start of KCGM’s next era www.nsrltd.com
Slide 22: Appendix: KCGM Mineral Resources and Ore Reserves 2022 to 2026
Appendix Mineral Resources Summary – KCGM Operations – 2022 to 2026 (inclusive) For personal use only Ore Reserves Summary – KCGM Operations – 2022 to 2026 (inclusive) MINERAL RESOURCES as at 31 March 2022 ORE RESERVES as at 31 March 2022 MEASURED INDICATED INFERRED TOTAL RESOURCES PROVED PROBABLE T